Changeset 19920 in vbox for trunk/src/VBox/Runtime/r0drv

Timestamp:

May 22, 2009 5:14:11 PM (16 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

47617

Message:

iprt/os2: Implemented RTThreadPreempt*.

File:

• trunk/src/VBox/Runtime/r0drv/os2/thread-r0drv-os2.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/r0drv/os2/thread-r0drv-os2.cpp

@@ -74 +74 @@
 }
 
+
+RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+    return false;
+}
+
+
+RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+
+    union
+    {
+        RTFAR16 fp;
+        uint8_t fResched;
+    } u;
+    int rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_YIELDFLAG, 0, &u.fp);
+    AssertReturn(rc == 0, false);
+    if (u.fResched)
+        return true;
+
+    /** @todo Check if DHGETDOSV_YIELDFLAG includes TCYIELDFLAG. */
+    rc = RTR0Os2DHQueryDOSVar(DHGETDOSV_TCYIELDFLAG, 0, &u.fp);
+    AssertReturn(rc == 0, false);
+    if (u.fResched)
+        return true;
+    return false;
+}
+
+
+RTDECL(void) RTThreadPreemptDisable(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    Assert(pState->uchDummy != 42);
+    pState->uchDummy = 42;
+    /* Nothing to do here as OS/2 doesn't preempt kernel threads. */
+}
+
+
+RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    Assert(pState->uchDummy == 42);
+    pState->uchDummy = 0;
+}
+